Oil-heater.



' H. DODEL.

OIL HEATER.

APPLIoA'HoN FILED Arn.a,'19oa.

Patented Dec. v15,. 1908.

HANS DODEL, OF SN. FRANCISCO, CALIFORNIA.

OIL-HEATER.

Specification of Letters Patent.

Patented Dec. 15, 1908.

' Application sled April a, isos. serial No. 424,870.

To all 'whom it may concem:

Be it known that I, HA'Ns DoDEL, citizen of the United States, residingin the city and county of San Francisco and State of California, haveinvented new and useful Imrovements in Oil-Heaters, of which thefoloWing is a specification.

My invention relates to Oilers, and oil heatf ing appliances, andpertains especially to oil tanks for use With automobile and otherengines, and to a means for heating the oil whereby it flow more freelyand lubricate more efflcaciously.

The invention consists of the parts and the construction and combinationof parts as hereinafter more fully described and claimed, havingreference to the vaccompanying drawin s, in Whichigure l is aperspective view of the device as applied. Fig. 2 is a transversesection through the cylinder.

In the embodiment of this invention in actual practice, I have shown itin conjunction with the engine and radiator of an automobile; but itwill be manifest that the invention is not limited to any specific useor any specific location.

A represents a gas engine of Well known construction, 2 a radiator, 3 apipe leading from the jacket of the engine or engines to the radiator,and 4 a centrifugal pum for circulating the cooling Huid fromthe ra'ator back through the pipes 5-6 to the engine jacket. y

7 is an oil tank having a suitably plugged oil inlet 8, and one or moreoil outlets, as 9, through which the oil is led to the various arts andmechanism of the machine needing ubrication. The ioW of the oil from thetank through the discharge conduits 9 is accomplished in the resent caseby the admission of compressedp air derived from any suitable so`urce ofsu ply through the pipe l0 leading into the oi tank; the compressed airexerting a suitable pressure on the oil to eect its proper iiow anddischarge.

The invention comprehends a Water jacket, as 11, contiguous to the oiltank, and having suitable fluid connections, as represented at 12--13,for the water circulation of the radiator and cooling system. i

After the engine is started, the water in the radiator becomes heated,so that if this Water is'brought into contact With the Walls of the oiltank, the heat from the water will be imparted to the oil and increasethe fluidity of the latter, which is the main desideratum of theinvention. The Water, as it comes from the 'engine and enters theradiator, is practically in a boiling condition, and it still retainssufficient heat, When returned through the pump and circulated throughthe water jacket 11, vto heat up the oil.

While I have shown a cylindrical oil tank, it is manifest that the oiltank and the cooling Water jacket may be of any suitable size, shapeor-material.

It is immaterial how the water jacket is fastened to the oil tank. It ispreferred, however, that the Water jacket be offsuch size and shape thata considerable body of oil in the tank will be exposed through theintervening wall to a large heating area of water in the water jacket.Therefore, in using a cylindrical oil tank, as 7, I prefer to use aJsegmental water jacket, as 11, partially surrounding the oil tank, andtherefore increasing the heated oil surface.

In operation, the engine is started, Whereupon the pump 4 causes acirculation through the system in the direction of the arrows,

' art of the return Water to the cylinders eing by-passed through theconnections l2-13 to the Water jacket, thus maintaina constantly heatedvolume of water in the Water jacket.

Among the numerous advantages of -heating the lubricating oil is thatthe flow of warm or heated oil is easier and more regular than the flowof cold oil. Therefore, a less quantity of oil is necessary; and also,it has been found that in oiling the cylinders there is less liabilityof fouhng the spark plugs. Heating the oil enables a thicker lubricantto be used. The Warm oil enters all grooves more freely, thereby oilingthe machine better, preserving its parts, and lessening friction. Italso permits the valves of the engine to close more tightly, therebyincreasing its (power.

Having thus describe my invention, what I claim and desire to secure byLetters Patent isico the Water 'v Water jacket partially inclosing thesame, set my hand in presence of two subscribing a Water ooolmv systemhaving main-eireulat Witnesses.

ing pipes, an ,branch pi es connecting the said clrculating pipes Witthe Water jacket HANS DODEL 5 and diverting a portion of the heatedWater Witnesses:

therethrough, for heati said oil tank. XAVIER DODEL,

In testimony whereo I have hereunto H. S. YOUNG.

